Model-Switched Beamformer with Large Dynamic Range. (13th October 2014)

• Record Type: Journal Article
• Authors: Hao, Zeng; Qian, Xing; Qingkun, Yang; Linfeng, Feng
• Other Names: Crocco Lorenzo Academic Editor.
• Is Part Of: International journal of antennas and propagation. Volume 2014(2014)
• Publication Date: 2014-10-13
• Subjects: Electronic apparatus and appliances -- Periodicals; Antennas (Electronics) -- Periodicals; Radio wave propagation -- Periodicals; Antennes (Électronique); Ondes radioélectriques -- Propagation; Antennas (Electronics); Electronic apparatus and appliances; Radio wave propagation; Electronic journals; Periodicals; 621.382405
• DOI: 10.1155/2014/625259
• Languages: English
• ISSNs: 1687-5869

Abstract

Abstract : The strong desired signal will be mitigated due to "self-nulling" for the adaptive beamformer, even if the array calibration is used. The proposed methodology switches the models between phased array and adaptive array. In general, the system utilizes Frost adaptive beamforming. However, it will be switched to phased array if the "self-nulling" appears. According to the estimation of the array pattern at the direction of desired signal, we can determine if the "self-nulling" happens. The new approach is much easier to implement compared with the various robust beamforming algorithms.